session limit on backend

[Pavlos Parissis]

Hi,

I have a  question about session limit on backend. Having the following
conf and without any parameters in frontend/backends about
sessions/connections I see that backends have 5000 session limit(slim in
CSV output).

How this number is calculated?


global
    log         127.0.0.1 local2 notice

    chroot      /var/lib/haproxy
    pidfile     /var/run/haproxy.pid
    maxconn     100000
    user        haproxy
    group       haproxy
    daemon


    stats socket /var/lib/haproxy/stats uid 0 gid 0 mode 0440 level admin

    ssl-server-verify none
    tune.ssl.default-dh-param 2048

defaults
    maxconn 50000
    rate-limit sessions
2000

    mode    http
    log     global
    option  contstats
    option  tcplog
    option  dontlognull
    option  tcp-smart-accept
    option  tcp-smart-connect
    option  http-keep-alive
    option  redispatch
    balance roundrobin
    timeout http-request    15s
    timeout http-keep-alive 15s
    retries                 2
    timeout queue           1m
    timeout connect         10s
    timeout client          15s
    timeout server          15s
    timeout check           5s


Thanks,
Pavlos